Arch Linux

Mat_A_Door

Member

Registered: 2025-12-27

Posts: 2

Wifi card slow to wake up after suspension

When my laptop wakes up (i.e from closing the lid and opening it again), the wifi card takes a really long time to start up again.

I get the following messages from journalctl:

Dec 27 20:08:57 fbi-van kernel: ath12k_pci 0000:c2:00.0: chip_id 0x2 chip_family 0x4 board_id 0xff soc_id 0x40170200
Dec 27 20:08:57 fbi-van kernel: ath12k_pci 0000:c2:00.0: fw_version 0x110cffff fw_build_timestamp 2025-06-25 09:26 fw_build_id QC_IMAGE_VERSION_STRING=WLAN.HMT.1.1.c5-00302-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.115823.3
Dec 27 20:08:57 fbi-van kernel: __ath12k_warn: 25 callbacks suppressed
Dec 27 20:08:57 fbi-van kernel: ath12k_pci 0000:c2:00.0: invalid ACPI DSM TAS config size: 1
Dec 27 20:08:57 fbi-van kernel: ath12k_pci 0000:c2:00.0: failed to get ACPI TAS config table: -22
Dec 27 20:09:09 fbi-van kernel: ath12k_pci 0000:c2:00.0: chan info: invalid frequency 6455 (idx 101 out of bounds)
Dec 27 20:09:09 fbi-van kernel: ath12k_pci 0000:c2:00.0: chan info: invalid frequency 6535 (idx 101 out of bounds)
Dec 27 20:09:09 fbi-van kernel: ath12k_pci 0000:c2:00.0: chan info: invalid frequency 6615 (idx 101 out of bounds)
Dec 27 20:09:09 fbi-van kernel: ath12k_pci 0000:c2:00.0: chan info: invalid frequency 6695 (idx 101 out of bounds)
Dec 27 20:09:10 fbi-van kernel: ath12k_pci 0000:c2:00.0: chan info: invalid frequency 6775 (idx 101 out of bounds)
Dec 27 20:09:10 fbi-van kernel: ath12k_pci 0000:c2:00.0: chan info: invalid frequency 6855 (idx 101 out of bounds)
Dec 27 20:09:10 fbi-van kernel: ath12k_pci 0000:c2:00.0: chan info: invalid frequency 6935 (idx 101 out of bounds)
Dec 27 20:09:10 fbi-van kernel: ath12k_pci 0000:c2:00.0: chan info: invalid frequency 7015 (idx 101 out of bounds)
Dec 27 20:09:10 fbi-van kernel: ath12k_pci 0000:c2:00.0: chan info: invalid frequency 7095 (idx 101 out of bounds)
Dec 27 20:09:11 fbi-van kernel: ath12k_pci 0000:c2:00.0: chan info: invalid frequency 6435 (idx 101 out of bounds)

I don't really know what it means, but it doesn't look good?

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 73,317

Re: Wifi card slow to wake up after suspension

https://en.wikipedia.org/wiki/IEEE_802.11#Generations
Looks like the 6GHz band isn't supported - out of context that doesn't mean much, the chip might not support 6E or the channels are regulated, https://en.wikipedia.org/wiki/List_of_W … _802.11be)
Is this even from a wakeup? "a really long time" is ~15s?
Is the output the result of a grep or is there nothing else going on during those 15s?

systool -vm ath12k_pci

and please post the entire journal covering the suspend and wakeup, no filters.

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc